I sympathize with you. Your build looked to be a professional build looking at your previous post.
When fuses blow, then there is a root cause for the fuse to blow as I found out with my 93 Dodge Ram truck when one of the fusible links blew and the mechanic changed out the link without determining the root cause and it blew again which left me stranded in a very precarious situation.
I know this is hard for you but for all of us in this forum that have their family at risk, the more that we can find out about this tragic loss the safer we will all fill. I have my 110kwhr LFP pack in the cellar of my home. If that caught on fire, then the whole house would go.
I have my Cells divided into two parts with two class t 200 amp fuses to protect the Cells. There are 128 -280 amp Cells. I did not put my Cells in a metal enclosure or compress them. They are on a nice piece of wood. This has really got me thinking about what I can do to protect myself further.
I am thinking about maybe fire blankets or some sort of a fire alarm that can be heard while sleeping two floors above the cellar.
Any suggestions would be appreciated. The simpler the better.